S0709730K
Page 12
Power Steering Unit
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TROUBLESHOOTING, TESTING AND ADJUSTMENT
Problem Cause Remedy
Steering wheel does not operate
smoothly
Broken or damaged oil pump. Replace pump.
Stuck or damaged relief valve. Repair or replace.
Stuck, damaged or worn out
steering valve.
Clean, repair or replace.
Restricted hose or pipe. Leaking
or restricted hose, pipe, or
connection.
Clean, repair or replace.
Mechanical defect in steering
gear.
Repair or replace.
Steering wheel has a heavy feel. Oil level low in reservoir. Add oil.
Low oil pressure due to broken
or damaged oil pump.
Replace pump.
Steering valve stuck. Clean, repair or replace.
Low oil level in steering gearbox. Inspect oil level, fill to proper
level.
Damaged bolt and nut in
steering gearbox.
Replace damaged parts.
Difficult to drive in a straight line Defective spool in steering
valve.
Tighten lock nut.
Stuck or damaged steering
valve or damaged or defective
spring.
Repair or replace.
Improper fit of track line. Repair or replace.
Noise during steering Low oil level in reservoir. Add oil.
Restricted inlet pipe or filter. Clean or replace
Steering system leaking oil Worn or damaged O-ring and oil
seal of pipe and steering valve.
Replace worn or damaged parts.
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